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| Geranium robertianum L. | Arohonka, T. 1982. Chromosome counts of vascular plants of the island Seili in Nauvo, southwestern Finland. Ann. Univ. Turku., Ser. A, Biol.-Geogr. 3: 1–12. | 84-85 | | 64 |
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| Geranium robertianum L. | Van Loon, J. C. & J. J. M. H. OUDEMANS. 1982. In IOPB chromosome number reports LXXV. Taxon 31: 343–344. | 82-83 | | 64 |
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| Geranium robertianum L. | Jav|0urková-Jarolímová, V. 1992. In J. M|3esí|3ccek & V. Jav@0urková-Jarolímová, List of Chromosome Numbers of the Czech Vascular Plants. Academia, Praha. | 96-97 | | 64 |
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| Geranium robertianum L. | Albers, F. & W. Pröbsting. 1998. In R. Wisskirchen & H. Haeupler, Standardliste der Farn- und Blütenpflanzen Deutschlands. Bundesamt für Naturschutz & Verlag Eugen Ulmer, Stuttgart. | 98-00 | | 64 |
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| Geranium robertianum L. | Lövkvist, B. & U. M. Hultgård. 1999. Chromosome numbers in south Swedish vascular plants. Opera Bot. 137: 1–42. | 98-00 | | 64 |
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| Geranium robertianum L. | Strid, A. & R. Franzen. 1981. In Chromosome number reports LXXIII. Taxon 30: 829–842. | 79-81 | | ca 64 |
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| Geranium robertianum L. | Murin, A. 1976. In Index of chromosome numbers of Slovakian flora. Part 5. Acta Fac. Rerum Nat. Univ. Comenianae, Bot. 25: 1–18. | | | 64 |
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| Geranium robertianum L. | Petrova, A. & P. Stanimirova. 2002. Mediterranean chromosome number reports 12 (1288--1294). Fl. Medit. 12: 454–460. | 01-03 | | 64 |
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